The information from this article is referred to SAP Note 1912674 – How to check kernel version of an AS Java.
There are two types of kernel in SAP NetWeaver Java system:
Native Kernel
- It is native executables of java startup framework which are written in C-code, such as jcontrol, jstart, jlaunch, sapstartsrv…etc
- It can be updated using file like SAPEXEDB.SAR and SAPEXE.SAR.
- GetVersionInfo function of sapcontrol command can display the kernel version.
Java Kernel
- It is java binaries of J2EE Engine itself, such as boot.jar, jstartup,jar…etc
- It can be updated during system release or Support Package Stack(SP/SPS) upgrade.
- System Information page and other tools (such as Visual Administrator) can display the kernel version.
Note:
- When kernel version is requested by SAP Consultant, it means Native Kernel unless clearly mention to get Java Kernel.
- If you only did update of Native Kernel, you only need to follow [For Native Kernel version] section to confirm whether kernel indeed get updated to expected one. There is no need to follow [For Java Kernel] section.
- Update of Native Kernel does not affect the version of Java Kernel.
For Native Kernel Version
- Use sapcontrol command,
- xx = instance number
------------COMMAND------------
sapcontrol -user [sidadm] [password] -nr [xx] -function GetVersionInfo
------------OUTPUT------------
06.04.2022 15:37:14
GetVersionInfo
OK
Filename, VersionInfo, Time
E:\usr\sap\SID\Jxx\exe\sapstartsrv.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:33
E:\usr\sap\SID\Jxx\exe\gwrd.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:24
E:\usr\sap\SID\Jxx\exe\icman.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:24
E:\usr\sap\SID\Jxx\exe\sapwebdisp.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:33
E:\usr\sap\SID\Jxx\exe\jcontrol.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:26
E:\usr\sap\SID\Jxx\exe\jlaunch.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:27
E:\usr\sap\SID\Jxx\exe\jstart.exe, 753, patch 921, changelist 2113400, RKS compatibility level 1, optU, ntamd64, 2022 01 29 12:28:29
- Use jstart command
------------COMMAND------------
jstart -v
------------OUTPUT------------
--------------------
jstart information
--------------------
kernel release 753
kernel make variant 753_REL
DBMS client library
compiled on NT 6.3 9600 x86 MS VC++ 18.00 for NTAMD64
compiled for 64 BIT
compilation mode UNICODE
compile time Jan 29 2022 01:26:24
update level 0
patch number 900
source id 0.921
RKS compatibility level 1
DW_GUI compatibility level 900
- Using SAP MMC
Right click on the SAP system and select Version Info.
The kernel version as below,
For Java Kernel Version
Launch the NWA page and go to the system information page to check the java kernel version.
